Ore-sampler.



0. H. FAJRGHILD.

ORE, SAMPLBR.

AIPLIOATION FILED JUNE 18, 1910,

Patented Aug. 22, 1911.

2 SHEETS-SHEET 1.

COLUMBIA PLANOGIIAPH 20., WASHINGTON. D c.

0. H. FA'I RCHILD.

ORB SAMPLER. APPLICATION FILED JUNE 18, 1910, I

Patented Aug. 22, 1911.

2 SHEETS-SHEET 2.

COLUMBIA PLANoaRAPn co.,wAsmNur0N, 11.1;

U TTE STATES PATENT OFFICE.

OSCAR H. FAIRGHILD, OF DENVER, COLORADO.

ORE-SAMPLEB.

Specification of Letters Patent. Patented Aug. 22, 1911.

Application filed June 18, 1910. Serial No. 567,610.

tion are: Firstto provide a sampler in" which a sample is takentransversely .across a sliding stream of ore. Secondto provide a samplerin which the sample is split into two parts at each operative samplemovement through the ore; and thirdto provide a sampler that willdistribute the reserved sampled product into two or more compartments. Iattain these objects by the mechanism illustrated in the accompanyingdrawings, in which:

Figure l is a plan view of the improved sampler, a portion only of thechute being shown, the sampler being in a horizontal position, for thesake of clearer illustration. Fig. 2 is a side view thereof. Fig. 3 is afront view of the same looking in the direction in which the oretravels. Fig. 4 is a vertical, longitudinal, sectional View of thesampler, showing the same inclined at about the angle necessary inpractical operation. Fig. 5 is a front view of the slide carryingsection of the sampler frame. Fig. 6 is a rear view of the slide; andFig. 7 is a perspective view of the slide looking at the front sidethereof.

Similar letters of reference refer to similar parts throughout theseveral views.

Referring to the drawings, the numeral 1 designates the upper half ofthe ore chute of the improved sampler, and 2 the lower half thereof.This chute comprises a flat bottom or floor and opposite upright sides.This ore chute is adapted to be inclined at a suitable angle to thefloor of an ore sampling mill, and the ore to be sampled is a finelycrushed or pulverized ore which is fed into the top of the ore chute ofthe sampler and runs down the same and discharges intov a suitableconveyer, by which it is conveyed into storage bins or to treatment forthe extraction of its values. To this ore chute 1 I secure a samplingdevice, the object of which is to automatically catch a portion spout.

of the body or stream of ore and lead it through a discharge spout whereit may be separated" into two or more divisions, if desired, andcollected into separate receptacles.

The sampler proper comprises two members or supports 3 and 4, which aresecured respectively to the upper and lower halves of the chute.

The member 3, which is secured to the upper part of the chute, comprisesa platform 5 and sides 6, that extend from the opposite ends of theplatform upwardly along the sides of the chute to which they are securedby bolts 7. The floor of the upper part of the ore chute rests on theplatform 5 of the support 3 and transversely against a shoulder 8 formedby a step in the platform 5. The sides of the support 3, adjacent totheir lower ends, are also stepped to form shoulders 9, against whichthe lower ends of the sides of the upper half of the chute 1 abut. Fromthe shoulders 9 the inner faces of the sides of the support convergetoward each other, as shown at 10, and these converging faces 10 areadapted to form a somewhat contracted channel for the ore immediately infront of the sampler In order to form the shoulders 9 and the inclinedfaces 10 the sides from the shoulders downward are increased inthickness, as shown, and flanges 11 are formed at the extremities of thesides, which are bolted to flanges 12 on the support 4. The support 4comprises upright sides, which are connected by a stepped bottom orplatform, upon which the lower half of the chute rests, the sides of thechute being bolted to the side'sof the support 4 by bolts 13. The flooror platform of the supporting frame 4 is on a lower plane than theplatform of the supporting frame 3, and the sides of the supportingframe 4 extend beyond the upstep and extends out flush with the end ofthe platform. This plate and the upper step form a slideway 17, which isadapted to re ceive a slide flange 18 on the front edge of the slide 14.The rear ed 'e of the slide 14 is adapted to overlap the adjacent edgeof the platform of the supporting frame 4, and the said edge of theframe abuts against a guide rib 19. on the under side of theslide, thelower portion of which rib is provided with a projecting guide 20, whichconstitutes a guideway, as will be understood by reference to Figs. 4and 6.

The slide 14 is provided with a threaded discharge aperture 21 thatextends through it into a discharging and distributing hopper'22 that isformed on the under side of the slide, and a sampling spout 23 isscrewed into the said aperture. The sampling spout is preferably made ofa piece of tubing of suitable length, one end of which is threaded. Atransverse slit is formed above the threads, and the tube is split fromits opposite end to the slit, and the severed por-' tions are then bentout so as to form a spout which in end view is U-shaped, as will be seenby reference to Fig. 1. The open side of the spout is arranged to facetoward the downwardly moving stream of ore and continuously catch aportion of the ore fiowing against it and guide it into the hopper 22,and it is made long enough to extend above the depth of any flowingstream of ore the chute will hold. The slide 14 is made long enough topermit this spout to travel across the width of the frame 3, which isnarrowed slightly by the convergingfaces of the thickened ends of thesides of the said frame. The thickened lower ends of the supportingframe 3 form walls 24, behind which the spout may pass at the oppositeends of its reciprocal movements, and in order to prevent any possibleleakage of ore between the upper surface of the slide and the openingsin the sides of the frame 4 through which the slide passes I provide theside walls above the slide with pieces 25 of leather, rubber, felt orother suitable material, which are of a length corresponding to thewidth of the slide, and these strips are arranged to bear against thetop of the slide. I

Metal strips 26 are placed over the strips 25, and the two strips arebolted to the sides of the supporting frame 4, as shown most clearly'inFigs. 4 and 5. V

The front edge of the slide 14 is formed with a plate 27 at right anglesto the slide,

which is provided with two parallel rows of gear teeth 28 and 29, whichare positioned at a short distance apart and with the teeth of the toprow extending beyond the teeth of the bottom row at one end and theteeth of the bottom row extending one tooth beyond the teeth of the toprow at its opposite end. Thesetwo independent rows of gear teeth areadapted to be engaged alternately by the teeth of oppositely movingsegment gears 30 and 31. To the opposing faces of the disk portions ofthese segment gears are secured beveled gears 32 and 33 by cap screws orother suitable means. The gears 30 and 31 are mounted on a shaft 34,which is journaled in bearings 35 and 36, one of which (35) is formed onthe platform of the frame, and the other one of which (36) is formedbelow it on a cross bar 37 that extends from one side arm to the otherbelow the frame and which is positioned at a sumcient distance from itto receive the hub portions of the spur gears'3O and 31 between them. Aset screw 38 is threaded through the bearing 36 against the shaft, andprevents it from rotating in its bearings. An oil passage 39 is formedin the axial center of the shaft, theentrance of which is interiorlythreaded to receive an oil cup 40, which is threadedly connected to it.

Oil passages 41 and 42 are drilled transversely through the shaft intothe axial oil passage in positions to admit oil to the hubs of thegears.

The bevel gears are spaced far enough apart to receive between themabevel toothed pinion 43, the teeth of which mesh with the its shaftbearing in alinement with the bearing 45. The shaft 44 extends beyondthe bracket bearing 46 far enough to receive a belt pulley 48, which isconnected by a belt to a source of rotative power that rotates the shaftand the beveled pinion and causes the beveled pinion to rotate beveledgears in opposite directions.

The operation of my improved ore sainpler is as follows: The crushed orpulverized ore is fed from Crushers, rolls or Huntington or other millsdirectly to the ore chute of the sampler, or from bins in which it hasbeen stored, and a stream of ore that will cover the floor portion ofthe chute is run through it. Rotative power is applied to the pulley 48,shaft 44' and bevel pinion43, and the bevel gears 32 and 33 are rotatedin opposite directions, and as these bevel gears form a part of the spurgears they are also rotated in opposite directions continuously, but asthe peripheral surfaces of these disks are provided with'a segmentalportion of a gear and as these gear portions are arranged substantiallyopposite to each other, the two spur gears are in mesh with the teeth 28and 29 of the slide 14 in alternate order; consequentlywhen onesegmental spur gear, for

instance, the spur gear engages the teeth 28 the sliding reciprocatingfloor is moved in one direction, which movement causes the samplingspout 23 to travel from one wall 24 across the floor of the chute to theopposite wall, and when it arrives at this point the teeth of thesegment leave the teeth 28 and the slide stops for a second or two, whenthe teeth of the gear 31 have turned to a point where they engage theteeth 29 of the slide and the slide commences its return movement acrossthe chute into its corner behind the opposite wall 24:, when this gearsegment leaves the slide teeth and the spur gear 30 again engages theteeth 28 and starts the slide across the chute again. This reciprocaltraveling movement of the slide is continued as long as ore flowsthrough the chute and the sample spout being arranged with its open sidetoward the downwardly flowing ore catches within its curved recessedsurface a portion of the ore as it moves at right angles to the flowingore through it and the ore caught by the sampler spout flows from thespout into the distributer 22, from which it discharges into areceptacle or into two or three or more receptacles placed under itspath of travel, as this distributer being a part of or attached to thesliding floor moves reciprocally with it across the width of the orechute. The end wall of the distributer is provided wit-h a plurality ofdistributing grooves 22*, as shown. The ore in the chute after it passesthe sample catching spout flows down the chute into the conveyer boot,from which it is conveyed to storage bins or to treatment for theextraction of its values.

My invention is simple, positive and sure in its action, notliable toget out of order and provides an accurate sampler of large daily tonnagecapacity, and while I have illustrated the preferred construction andarrangement of my improved ore sampler, I do not wish to be limited tothe construction and arrangement shown, as my invention contemplatesbroadly a sample catching spout traveling reciprocally across a flowingstream of ore or other material, from which it is desired to reservesamples for testing purposes to ascertain its values or otherproperties, and many changes might be made in the present constructionand arrangement without departing from the spirit of my invention.

Having described my invention, what I claim as new and desire to secureby Letters Patent is:

1. In a sampler, the combination of a sampler frame, comprising fixedside and floor portions, and a slide reciprocally mounted in said fixedfloor portion provided with an aperture, a spout secured in saidaperture and arranged to project vertically above it far enough toextend above any body of ore flowing through said sampler, a sampledistributing hopper on the under side of said reciprocating floorsurrounding the discharge aperture of said spout arranged to move withsaid slide, two independent and parallel toothed rack portions arrangedon one side of said slide, a pair of segment gears rotatably mounted onsaid frame, each of which is arranged in operative meshing relation toone of said tooth racks, said segments having their gear toothedsegments arranged diametrically opposite to each other and arranged toengage said toothed racks in alternate order, and means for rotatingsaid segment gears at the same speed.

2. A sampler comprising a suitable frame provided with an ore feedingchute leading into it and an ore discharging chute leading from it, saidsampler frame comprising stationary side and floorportions, said floorportions being provided with a slideway, a slide mounted in saidslideway, a sample distributing hopper on the under side of said slide,a spout comprising a partial tubular portion secured in a hole in saidslide, and arranged to extend above the slide far enough to stand abovethe depth of ore flowing through said sampler, said spout being arrangedto face ore flowing through said sampler and guide it through saidfioorinto said distributing hopper, a pair of toothed rack bars on the slide,a pair of combined toothed segments and beveled gears arranged to meshwith said rack bars, means including a beveled pinion for rotating saidbeveled and toothed segments in opposite directions, said segments beingarranged to engage said toothed rack in alternate order and toreciprocate said moving floor so as to continuously move said spoutreciprocally across said sampler.

3. In a sampler, the combination of the ore chute and the frame of thesampler, comprising a floor and side portions, a slide in said frameprovided with a discharge aperture, an ore catching spout secured insaid aperture and arranged to face ore flowing through said frame andchute and adapted to move between the sides of said frame, walls at theopposite sides of the frame, behind which the said spout is adapted topass at the limit of each reciprocating movement, a hopper on the underside'of said slide arranged to surround the discharge aperture of saidslide and spout, said hopper being provided with a grooved and outwardlycurved end member, a pair of parallel toothed racks on said slide andoppositely moving segment gea'rs adapted to alternately engage saidracks.

4:. In a sampler as specified, a pair of supporting frames havingapertured flanges and bolts which pass through said flanges to unitesaid frames, a chute secured to the end of each frame, a slidereciprocally mounted between the opposing ends of the frame and Intestimony whereof Iaflix my signature halving a discharge hole thgrein,and an open in presence of two witnesses. si ed spout secured in sai 0enin s means for reciprocating said slide aid a grdjection OSCARFAIRCHILD' 5 on each side of the frame which momentarily Witnesses:

cuts ofi the spout from the flowing ore at the G. SARGENT ELLIOTT, endof each reciprocal movement of the slide. ARLIE M. DOYLE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

